Pipe-cutting device.



Patented July 24, I900.

No. 654,2l3.

J. W. WILSON.

PIPE CUTTING DEVICE.

(Application filed Mar 8, 1900.)

(No Model.)

witmo e/J Miran STATES PATENT Grates.

JOHN W. WILSON, OF SHANER, OKLAHOMA TERRITORY.

PIPE-CUTTING DEVICE.

amendment forming part of Letters was No. 654,213,dated Ju1y 24, 1906.Application filed March 8J 1900. Serial No. 7,904. (No model.)

To aZZ whom, it may 001mm Be it known that I, JOHN W. WILSON, of Shaner,county of Garfield, and Territory of Oklahoma, have invented certain newand useful Improvements in Pipe Forming and Laying Devices; and I dohereby declare the following to be a full and clear description thereof.4

My invention is designed for cutting or forming openings into drainageor irrigation pipes of the character designed to be laid or formed bythe apparatus shown and described in United States Patent No. 220,757.This apparatus lays a continuous and unbroken line of concrete pipe. Asheretofore constructed, in order to permit drainage-water to enter thepipe the pipe was severed into separate sections, whereby when the pipebecame undermined by washouts or otherwise it was possible for theundermined section to fall from its place, thus destroying thecontinuity of the drain-pipe.

The object of my present invention is to form openings withoutdestroying the continuity thereof, such openings being formed in thesides of the pipe designed for drainage purposes and preferably formedon the top of pipes designed for irrigation purposes.

The inventive idea involved in my invention may receive variousmechanical expressions, one of which is shown in the accompanyingdrawings, in which Figure l is a perspective view of the apparatus shownin the said Patent No. 220,757 with my improved pipe-cutting deviceattached thereto; Fig. 2, an end elevation thereof. Fig. 3 is a verticalcentral longitudinal section of Fig. 1, parts being shown in elevation,showing my cutting device, but with a modified form of the cutter. Fig.dis an end elevation of Fig. 3, parts being in section.

My pipe device may be employed on any A suitable pipe-laying apparatus;but as here shown it consists of a suitable baseblock A, having mountedthereon a standard B, which has secured thereto a coiled spring 12, thelower end of which is attached to the cutter, which in Figs. 1 and 2 isindicated by the reference-letters O O. This cutter consists of aninverted-U-shaped piece of steel normally held in an elevated positionby the spring I) and playing in suitable side slots a, formed bya stemd. that Where the knife C is employed, the spring in the base-block A.Secured to the upperbar of the cutter is a line 0', which passes un dera pulley b and then into a position to be operated by the workman whooperates the handle E of the pipe-forming device. The space between thecutter-blades is slightly less than the width of the piston F of thepipeforming device and is therefore slightly less than the interiordiameter of the pipe when formed. The base-block A is secured to a hoodG of the pipe-forming device in any suitable manner, preferably by meansof a bolt g (shown in Fig. 3) and pin g, projecting from the hood andentering a recess in the block to hold it steadily in position.

The operation of the device as thus far described is as follows: Thepipe-forming device having been operated to form a pipe in the mannerdescribed in Patent No. 220,757, the operator seizes the handle to cord0 and by pulling thereon depresses the knife or cutter 0 against thetension of the spring into the position shown by dotted lines in Fig. 2,thereby cutting a kerf 01' slot in each side of the pipe, through whichwater may enter for drainage purposes and through which it may escapefor irrigating purposes. The kerfs or slots having been out in the sidesof the pipe, the operator releases the pull on the cord 0, the spring I)elevates the knife 0, and the work of forming the pipes proceeds asbefore until such length of section has been formed as is desired, whenthe Workman again operates thecutter to cutanother slot in the pipe, 7

Y WVhen it is desired to cut an opening into the top of the pipe ratherthan the sides thereof, the knife 0 is removed and a circular punch orcutter D,.Figs. 3 and,4,'is substitu ted, this punch being secured tothe spring 111 this construction, as Well as is preferably attached tothe cutter by means of pin b Fig. 3, extending through the slot in thestandard B, thereby forming a guide to steady and control the action ofthe cutter. Referring to Fig. 4, it will be understood that when thecutter D is lowered by a pull on the cord 0 a round hole or opening willbe formed in the top of the pipe, and as the spring elevates the cutterupon release of the cord 0 the lower end ('2 of the standard 13 servesas a punch to eject the portion removed from the pipe.

It will be observed that by means which I employ for cutting the pipe Ileave it unbroken, with sufficient strength to support itself in case ofslight washouts or similar action depriving the pipe of itsfoundation-supports.

Having thus described my invention, what I claim is 1. In a pipe formingand laying device the combination of a cutter and a suitable sup,- porttherefor, means for depressing the cutter, means for elevating thecutter above the pipe, and means for forming the pipe.

2. In a pipe forming and laying device the combination of a base-blockand standard thereon, a cutter supported by said standard, means fordepressing the cutter, a spring reacting between the standard and cutterto elevate the same, and means for forming the pipe.

cutter with its blades on opposite sides of the pipe.

In testimony whereof I have affixed my signature in the presence of twowitnesses.

JOHN W. WILSON.

Witnesses:

HARRY SHARP, M. R. GLASGOW.

